RT Journal Article SR Electronic T1 Colonic strictures mimicking Crohn’s disease JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 233 OP 387 DO 10.1136/gutjnl-2019-320172 VO 70 IS 2 A1 Kento Takenaka A1 Maiko Kimura A1 Kazuo Ohtsuka YR 2021 UL http://gut.bmj.com/content/70/2/233.abstract AB